Blue / Green Screens

mrmike wrote on 9/15/2004, 4:24 AM

What are the exact colors for blue and green screens; i.e., the four color numbers -- 255, 075, 37? What are they? There must be an industry standard for these two colors so it is easy to match. I have looked everyway and have come up empty.

Comments

rs170a wrote on 9/15/2004, 6:34 AM

The problem is that there are no "exact" numbers because there are too many variables, mainly lighting.
Are you looking to go to a paint store and buy the equivalent colour?

If all you want to do is generate a green screen electronically, here's a reply form a post to the rec.video.production NG. The poster runs a company selling green/bluescreen hardware and software so he does know what he's talking about.

Q:
I want to make some titles in Photoshop and wanted to make the
backgrounds in a blue or green chroma key for easy matting. What are
the RGB equivalents for either of these chroma key colors??

A:
Blue 20,20,180
Green: 20,180,20

No need to get more saturated than that, and the 20 value in the other colors tends to give you a bit more luminance, which helps with edges.

If I've misuinderstood what you're looking for, please say so.

Mike

JasonMurray wrote on 9/15/2004, 6:36 PM

The only thing that gets me with that is - why would you need a green/blue background on titles in photoshop for matting?

Weird :)

rs170a wrote on 9/15/2004, 7:18 PM

why would you need ...

I'm reminded of the saying that begins "Ours is not to reason why...".
Someone asks a question - I answer it. Sometimes, I figure I'm better off not asking. :-)

Mike

JasonMurray wrote on 9/15/2004, 9:17 PM

Oh, I know it was copied from an answer elsewhere. :) Just seemed bizarre. :)

Skywatcher wrote on 9/15/2004, 11:01 PM

Not much Adobe PS can do that you cant do in VEGAS and do it as a Transparancy...no need for chroma keying...

But maybe I mis-understood what he's trying to do.

Skywatcher

Just got it...Copy/Paste question, my bad.